Modem  SckoQi 

Const  ruction 


TRUSSED 
CONCRETE 
STEEL  CO. 


DETROIT,  MICH. 


MODERN  SCHOOL 
CONSTRUCTION 


FIREPROOFNESS 

SOUNDPROOFNESS 

DAYLIGHTING 

SANITATION 

ECONOMY 


4 


▲ 


FKAHN 
Building 
Product^ 


^  TRUSSED 
CONOR 
\  STEEL 
CO  / 


V 


(.'upyr/g/jt  1914 
Trusicd  Concrete  Steel  Co. 


Trussed  Concrete  Steel  Co. 

DETROIT,  MICH. 


c.  BENSON  WIGTON,  C.  E. 

engineer  and  agent 
141  MILK  ST..  BOSTON.  MASS 


2 


Modern  School  Construction. 


iliiii 

WV9T1| 


■uummiuL  mtiitmiiiL 


r 


lU 


High  School,  Muskogee,  Okla. 

Built  Kahn  System  of  Reinforced  Concrete. 


Ilausnii.  Kt'diaii  &  X'aleiii',  .\rc'Iiilcii. 


High  School,  Bloomfield,  N.  J. 

Built  Kah  n  System  Reinforced  Concrete. 


I  li.n  Ic>  (Iranvillf  Joiu’s.  Arcliitcrt. 


Trussed  Concrete  Steel  Co.,  Detroit. 


n 


Safety  in  School  Construction. 

Many  advances  have  been  made  during  recent  years  in  the  design  and  construc¬ 
tion  of  school  buildings.  Scientific  study  and  thorough  investigation  has  been  given 
to  such  features  as  the  arrangement  of  rooms,  better  lighting,  improved  ventilation, 
modern  sanitation,  fireproofness,  soundproofness  and  economy.  The  many  improve¬ 
ments  in  modern  schools  have  resulted  in  a  higher  standard  of  scholarship  and  of 
health  among  the  students. 

‘  Safety  First’  is  a  brief  expression  which  indicates  the  prominence  of  the  pres¬ 
ent-day  movement  for  the  better  protection  and  safeguarding  of  human  lives.  No¬ 
where  should  this  appeal  have  a  greater  consideration  than  in  the  construction  of 
school  buildings.  Here  are  housed  hundreds  of  little  children  with  neither  the  strength 
nor  the  experience  to  protect  themselves  in  the  face  of  such  dangers  as  fires. 

The  necessity  for  fireproof  construction  of  schools  is  now  generally  recognized  by 
School  Boards  and  tax  payers.  There  is  no  need  to  picture  the  horrors  of  a  Collings- 
wood  calamity  nor  the  long  list  of  school  fires  occurring  every  year.  The  lessons  of 
these  disasters  have  been  well  learned  by  thinking  people.  The  laws  of  many  States 
now  require  fireproof  construction  throughout  for  schools  of  any  size,  and  even  in  the 
smaller  buildings  fireproof  corridors,  stairs  and  boiler  rooms.  There  is  no  doubt  but 
that  every  section  of  the  country  will  adopt  similar  laws  in  the  near  future. 

The  cost  of  fireproof  construction  has  been  greatly  reduced  by  the  introduction 
of  reinforced  concrete  in  building  schools.  Fireproof,  modern  schools  now  cost  little 
if  any  more  than  the  old  style,  inflammable  building,  with  masonry  walls  and  wood 
joists.  Reinforced  concrete  is  used  in  many  parts  of  the  building,  including  floors, 
roofs,  stairs,  partitions,  ceilings,  etc.  The  exterior  design  may  be  of  masonry,  brick 
or  concrete  as  desired. 

The  proper  distribution  of  daylight  throughout  the  rooms  (usually  obtained 
from  one  side  only)  requires  serious  consideration  in  the  construction  of  the  windows 
The  use  of  modern  steel  sash  assures  maximum  daylight  from  the  window  openings. 
There  are  no  wide  mullions  or  muntins  to  obstruct  the  light. 

The  following  pages  indicate  a  few  suggestions  for  the  proper  construction  of 
schools,  as  well  as  a  number  of  photographs  of  typical  installations.  The  wide  extent 
to  which  Kahn  Building  Products  have  been  used  in  school  buildings  has  given  our 
engineers  an  exceptional  experience  along  these  lines.  Their  suggestions  are  sure  to 
be  useful  and  are  furnished  free  of  all  obligation. 


4 


Modern  School  Construction. 


Floor  Construction  for  Schools. 

FIREPROOFNESS:  By  making  the  floors  of  schools  fireproof,  the  greatest  fire  clanger  is  elim¬ 
inated,  because  the  fire  can  then  be  confined  to  one  locality  without  communicating  to  floors  above 
or  below.  The  earlier  methods  of  constructing  fireproof  floors  usually  involved  steel  girders  with 
heavy  arches.  The  great  expense  of  such  construction  often  made  its  use  prohibitive.  The 
introduction  of  reinforced  concrete  not  only  reduced  this  cost  but  brought  many  other  advantages, 
such  as  flat  ceilings,  lighter  weight,  simplicity,  etc.  Various  types  of  reinforced  concrete  are  used, 
including  steel  Floretyle,  reinforced  terra  cotta  tile,  reinforced  solid  concrete,  etc.,  as  indicated  in 
the  following  pages. 

SOUNDPROOFNESS:  Floors  of  reinforced  concrete  are  soundproof — an  important  advantage  in 
schools.  Steel  Floretyle  and  reinforced  terra  cotta  tile  are  very  superior  in  this  respect,  owing  to 
the  insulating  qualities  of  the  dead  air  spaces  in  the  tile.  No  noise  or  sound  can  possibly  be 
communicated  between  floors. 

STRENGTH  AND  SAFETY :  Numerous  tests  under  severe  conditions  by  Public  Building  Bureaus 
and  on  actual  installations  have  repeatedly  demonstrated  the  exceptional  strength  of  reinforced 
concrete  construction.  These  tests  include  not  only  heavy  load,  but  severe  fire  tests.  The  test 
loads  on  actual  floors  have  often  been  four  times  the  required  carrying  capacity,  without  show¬ 
ing  any  signs  of  weakness.  Reinforced  concrete  floors  are  also  very  rigid  and  free  from  vibration, 
as  demonstrated  in  many  industrial  buildings  where  heavy  vibrating  and  pounding  machinery  is 
placed  directly  on  the  floor. 

SANITATION:  Reinforced  concrete  floors  insure  the  best  sanitary  conditions.  Being  of  masonry 
construction  there  is  no  lodging  place  for  germs  or  vermin  of  any  kind.  Compare  this  with  wooden 
construction  with  its  open  timbers  and  its  tendency  to  become  damp  and  unsanitary. 

ECONOMY :  Reinforced  concrete  is  much  more  economical  than  any  other  construction  when 
one  considers  its  permanence  and  the  saving  of  insurance.  As  a  matter  of  fact,  when  reinforced 
concrete  floors  are  properly  combined  with  other  features  of  the  construction,  the  first  cost  is  little 
if  any  more  than  the  old  style  buildings  with  wood  joists.  Its  economy  in  the  long  run  can  be 
readily  demonstrated  by  actual  comparative  figures. 

FLAT  CEILINGS:  School  rooms  are  ordinarily  from  20  to  30  feet  in  width  and  it  is  desirable 
to  have  a  flat  ceiling  over  them  with  no  projecting  beams  to  collect  dirt  and  interfere  with  light¬ 
ing.  This  is  readily  accomplished  on  long  spans  by  the  use  of  Floretyle  or  reinforced  terra  cotta 
tile  construction,  and  in  shorter  spans  by  reinforced  solid  concrete.  In  all  cases  the  floor  con¬ 
struction  spans  the  full  width  of  the  room,  giving  an  absolute  flat  ceiling  free  of  all  beams  and 
projections.  Compare  this  with  the  earlier  types  of  fireproofing  with  steel  girders,  which  not  only 
had  beams  projecting  below  the  ceiling,  but  which  were  considerably  more  expensive. 

FLOOR  FINISH:  Any  type  of  finished  floor  may  be  laid  upon  the  reinforced  concrete  construc¬ 
tion.  Ordinarily  a  wooden  floor  is  desired  and  can  be  readily  obtained  by  placing  small  wooden 
sleepers  on  top  of  the  construction,  filling  in  between  them  with  cinder  concrete  and  attaching 
the  finished  floor  to  them.  Finished  floors  of  cement,  tile,  terrazzo  or  composition  are  often  laid 
on  the  concrete  construction,  particularly  in  corridors,  auditoriums,  etc. 


Trussed  Concrete  Steel  Co.,  Detroit. 


o 


STEEL  FL0RETYLE5 


Sectional  view  of 
^  Floretyle  construction 
from  above. 


<o 


Steel  Floretyles,  the  Ideal  Construction 
for  Floors  in  Schools. 


Steel  Floretyle  construction  as  shown  in  the  illustration,  consists  of  rows  of  hollow  steel  tile, 
separated  by  reinforced  concrete  joists  and  covered  with  a  thin  layer  of  concrete.  These  narrow 
joists  carry  the  loads  directly  to  the  supports,  while  the  Floretyle  act  merely  as  fillers,  saving 
concrete  and  reducing  dead  weight.  Hy-Rib  extends  continuously  underneath  and  provides  a 
flat  ceiling  and  a  perfect  surface  for  plastering. 

The  many  advantages  of  Steel  Floretyle  Construction  make  it  particularly  adapted  for  school 
floors.  Flat  ceilings  over  all  rooms  are  assured  as  spans  up  to  30  ft.  and  greater  can  be  readily 
secured  without  the  use  of  any  intermediate  beams.  Furthermore,  this  ceiling  construction  is  light 
in  weight,  owing  to  the  heavy  masses  of  concrete  that  are  saved  by  the  hollow  Floretyle.  The 
reduced  weight  makes  a  corresponding  saving  in  all  the  supporting  construction. 

Soundproofness  of  floors  is  assured  by  the  insulating  qualities  of  the  dead  air  space  formed 
by  the  Floretyle.  These  open  spaces  also  greatly  simplify  the  location  and  the  installation  of 
ventilator  flues  of  which  a  great  many  are  required  in  modern  schools;  also  conduits  and  pipes 
can  be  readily  carried  along  the  length  of  the  Floretyle  without  cutting  or  weakening  the  con¬ 
struction. 

The  great  strength  of  Floretyle  construction  has  been  repeatedly  demonstrated  by  elaborate 
tests,  and  hundreds  of  installations  in  important  buildings.  The  Railway  Exchange  Building  in 


Sectional  perspective 
from  below,  showing  deep 
stiffening  ribs  in  Floretyles  and 
flat  ceiling  of  Hy-Rib,  partly  plastered. 


f) 


Modern  School  Construction. 


Use  of  Floretyles  at  Couzens  Building,  Detroit,  Mich. 

Note  the  true  lines  of  joists  and  the  great  rigidity  of  Floretyles. 


St.  Louis  is  a  block  square,  twenty-one  stories  high,  and  contains  over  thirty  acres  of  Floretyle 
construction.  A  full-sized  panel  of  this  Floretyle  construction  was  built  under  severest  weather 
conditions  and  tested  with  a  load  of  491,651  lbs.,  without  showing  any  sign  of  weakness. 
Numerous  other  tests  have  been  made,  such  as  for  the  Marcus-5^hitman  School  described  on  next 
page.  Floretyle  construction  has  been  approved  and  passed  by  the  Building  Bureaus  of  all 
principal  cities  of  the  country. 

Floretyle  construction  is  very  simple  to  install.  Labor,  time  and  material  are  saved  by  the 
simplicity  of  the  centering,  the  large  size  of  the  Floretyles  and  the  wide  spacing  of  the  joists. 
This  construction  can  be  used  with  equal  success  in  all  parts  of  the  country,  as  the  Floretyle  and 
reinforcement  are  readily  shipped  at  low  freight  rates. 


Floredome  Construction. 

Steel  Floredomes  present  all  the  advantages 
of  Floretyle  construction,  but  are  adapted  for 
two-way  construction  in  which  the  loads  are 
carried  in  two  directions  to  the  supports.  The 
metal  domes  are  deeply  corrugated  to  secure 
stiffness  and  are  only  open  on  the  underside, 
so  that  the  joists  extend  on  all  sides  of  the 
dome. 


Trussed  Concrete  Steel  Co.,  Detroit. 


Load  30,800  lbs.;  225  lbs.  per  sq.  ft. 

Deflection  .56  in. 


Load  41,000  lbs.;  300  lbs.  per  sq.  ft. 
Deflection  .92  in. 


An  Exhaustive  Test  on  Floretyle  Construction 

for  Marcus  Whitman  School,  Spokane,  Washington. 

In  this  remarkable  test  Floretyle  Construction  developed  a  strength  five  times  as  great  as 
the  load  for  which  it  was  designed.  The  test  was  conducted  prior  to  the  construction  of  the 
.Marcus-Whitman  School  on  a  full-sized  panel  having  a  clear  span  of  26  feet  and  width  of  5 
feet  3  inches.  The  construction  was  designed  for  a  safe  live-load  of  75  pounds  per  square  foot. 

The  floor  consisted  of  three  concrete  joists,  each  reinforced  with  one  Kahn  Trussed  Bar 
and  separated  by  steel  Floretyle  of  standard  design,  1 0  in.  deep  and  20  in.  wide.  The  total 
thickness  of  the  slab  was  I  3  in.  The  test  was  conducted  very  carefully  with  the  co-operation 
of  the  City  Engineer  and  his  assistants.  Deflections  were  accurately  measured  at  9  points  in 
the  span  by  means  of  instrument  readings  upon  bolts  imbedded  in  the  concrete. 

The  slab  was  originally  loaded  with  20,500  lbs.  of  pig  iron  equal  to  150  pounds  per  sq. 
ft.,  with  a  maximum  deflection  of  1  3  32  in.  After  the  removal  of  the  load,  the  slab  returned 
to  practically  its  original  position. 

On  the  following  day,  the  slab  was  tested  to  its  ultimate  carrying  capacity.  Under  a 
loading  of  20,500  pounds,  the  deflection  was  .2  7  inch,  equivalent  to  I  1  100  of  the  span, 
while  the  City  Building  Code  allows  a  deflection  as  great  as  1  700  of  the  span.  No  cracks  nor 
signs  of  weakness  were  apparent  under  this  loading. 

The  test  was  continued  and  the  deflections  under  loadings  of  30,800  pounds,  41,000  pounds, 
and  51,000  pounds,  were  .56  inches,  .92  inches  and  1.5  inches.  Above  this  loading  the  deflec¬ 
tions  increased  gradually  until  over  six  inches  before  failure  occurred  at  52,000  lbs.  This  load 
is  equivalent  to  375  pounds  over  every  squaie  foot  of  floor,  or  five  times  the  load  for  which 
the  slab  was  designed.  This  test,  as  well  as  numerous  others,  prove  conclusively  the  wonder¬ 
ful  strength,  safety,  and  rigidity  of  Floretyle  Construction.  See  photograph  of  Marcus  Whit¬ 
man  School,  page  38. 


Deflection  of  6  in.  before  Gradual  Failure  at  Center 
Under  Load  of  52,000  lbs.  (375  lbs.  per  sq. 
ft.)  Five  times  the  designed  load. 


Load  51,000  lbs.;  3  70  lbs.  per  sq.  ft.  Deflection 
1.50  in.  Designed  for  10,240  lbs.  (75  lbs. 
per  sq.  ft.) 


8 


Modern  School  Construction. 


Detail  of  Window  Framing  Into 
Concrete  Lintel  Beam. 


Cross  Section  Reinforced  Hollow  Tile  Floor. 


tFySxez—x,.*!. —  .  —  • 


Detail  of  Framing  Reinforced  Concrete  Columns,  Beams 
and  Floors. 


Reinforced  Hollow  Terra  Cotta  Tile  Construction. 


Terra  Cotta  Tile  Construction  possesses  many  of  the  advantages  of  Steel  Floretyle  Construe- 
tion,  but  to  a  much  more  limited  degree.  In  this  construction  also,  the  hollow  tile  are  separated 
by  reinforced  concrete  joists  which  carry  the  full  weight  of  the  construction,  assuring  flat  ceil¬ 
ings  of  long  span,  extending  across  the  width  of  the  room.  Terra  Cotta  Tile,  however,  is  much 
heavier  than  Steel  Floretyle  and,  therefore,  increases  the  weight  of  the  floors;  also  the  joists 
are  16  in.  instead  of  24  in.  on  centers,  requiring  more  concrete  and  increasing  the  labor  in  placing. 
Terra  Cotta  Tile  is  limited  for  use  in  localities  near  tile  plants;  otherwise  the  freight  on  the  tile 
would  make  it  too  costly.  This  construction  is  thoroughly  soundproof  and  fireproof,  allows  sim¬ 
ple  installation  of  ventilator  flues  and  conduits,  and  has  been  very  extensively  used  throughout 
the  country  in  the  construction  of  school  floors. 


Reinforced  Solid  Concrete  Construction. 


Solid  concrete  reinforced  with  steel  is  frequently  used  for  floors  of  schools,  but  is  only 
recommended  for  shorter  spans,  less  than  12  ft.  For  greater  spans  its  weight  would  be  excessive 
and  Steel  Floretyle  or  Terra  Cotta  Tile  should  be  used.  Where  a  solid  concrete  construction  is 
desired  for  longer  spans,  intermediate  beams  of  reinforced  concrete  are  used.  These  beams 
span  the  width  of  the  room  and  are  spaced  4  ft.  to  8  ft.  apart,  supporting  a  thin  reinforced 
concrete  slab.  This  type  of  construction  affords  ample  strength  but  has  the  disadvantage  of 
projecting  beams  which  collect  dirt,  interfere  with  lighting  and  are  unsightly  in  appearance.  Solid 
concrete  is  also  not  as  soundproof  as  Floretyle  or  Terra  Cotta  Tile,  and  presents  greater  difficul¬ 
ties  in  the  location  of  conduits  and  ventilators. 


Trussed  Concrete  Steel  Co.,  Detroit. 


li.  H.  i'otter,  Architect. 

Stairs  and  Corridors,  High  School,  Glens  Falls,  N.  Y.  (See  Photograph  Page  31). 

Kahn  System  Reinforced  Concrete  Stairs  and  Floors. 


Reinforced  Concrete  Corridors  and  Stairs 

No  matter  what  type  of  construction  may  be  used  in  the  rest  of  the  building,  the  Corridors 
and  Stairs  should  be  built  absolutely  fireproof,  so  as  to  provide  safe  means  of  exit  and  to  delay 
the  spread  of  the  fire.  The  floors  of  the  corridors  are  built  of  any  of  the  various  types  of  rein¬ 
forced  concrete  previously  described.  Stairs  and  stair  landings  are  constructed  of  solid  concrete 
reinforced  with  steel  and  can  be  of  any  desired  design  to  suit  all  requirements.  Corridors  and 
stairs  built  in  this  way  have  the  greatest  possible  resistance  to  fire. 


Floors  Over  Boiler  Rooms 

All  floors  over  boiler  rooms  or  fuel  storage  rooms  should  be  of  the  best  possible  fireproof 
construction  of  reinforced  concrete.  This  is  imperative,  no  matter  what  the  construction  of  the 
rest  of  the  building  may  be.  Fires  very  frequently  originate  in  boiler  rooms  and  by  using  a 
precaution  of  this  kind,  at  least  one  of  the  fire  dangers  is  eliminated. 


Id 


Modern  School  Construction. 


General  Features  of  Construction 

The  use  of  fireproof  construction  for  floors  in  schools  has  often  consisted  merely 
in  the  substitution  of  reinforced  concrete  for  wood  joists  without  affecting  in  any  way 
the  general  arrangement  of  supporting  walls,  both  exterior  and  interior.  In  such  a 
construction  these  walls  are  built  heavy  enough  to  support  the  floor  construction, 
which  spans  directly  between  them.  The  light  weight  of  Floretyle  construction  greatly 
reduces  the  loads  coming  on  such  walls. 

A  considerable  saving  in  the  cost  of  the  school  is  effected  by  using  a  frame  work 
of  reinforced  concrete  girders  supported  on  columns  in  place  of  the  heavy  interior 
walls,  which  then  become  merely  dividing  partitions.  As  these  partitions  do  not  carry 
any  loads,  they  can  be  built  very  thin  of  Hy-Rib  construction  (see  page  12),  being 
only  2  in.  thick.  The  saving  in  space  is  over  1  2  in.  in  the  width  of  each  room  as  a  1  7 
in.  brick  wall  would  ordinarily  be  required.  This  makes  a  considerable  reduction  in  the 
width  of  the  building,  effecting  material  savings  in  all  parts  of  the  construction  and 
greatly  reducing  the  total  cost  of  the  school.  Savings  of  this  nature  will  often  counter¬ 
balance  the  slight  additional  initial  cost  of  fireproof  construction. 

Some  designers  carry  the  same  system  of  supporting  girders  and  columns  into  the 
outside  wall  construction,  using  what  is  known  as  skeleton  frame  design.  Outside 
walls  then  become  light  curtain  walls  which  do  not  carry  any  loads,  as  the  floors  are 
carried  at  each  floor  level  by  girders  and  columns.  The  concrete  construction  is  often 
left  exposed  on  the  exterior  but  some  designers  prefer  to  veneer  it  with  layer  of  brick 
or  terra  cotta.  Skeleton  frame  construction  often  presents  decided  advantages  in  speed 
and  economy,  as  the  entire  framework  of  floors,  girders  and  columns  is  erected  in  one 
operation  without  the  delays  occasioned  by  building  supporting  walls. 

Any  type  of  floor  designs,  previously  described,  may  be  used  in  connection  with  the 
above  general  methods  of  construction.  Variations  or  combinations  of  them  may  be 
adopted  to  suit  individual  requirements.  Our  engineers  would  be  glad  at  all  times  to 
make  suggestions  as  to  the  most  economical  and  satisfactory  construction. 


Semi-Fireproof  Construction 

Occasionally  in  small  schools  it  is  desired  to  reduce  the  cost  of  construction  to  a 
very  low  figure  and  at  the  same  time  secure  a  construction  of  some  fire  resistance.  For 
such  buildings,  the  old-style  wood  joists  may  be  retained  but  in  place  of  the  wood  lath 
ceiling,  use  metal  lath,  plastered  with  cement  mortar.  Also  use  this  metal  lath  for  all 
partitions  and  furring.  This  metal-lath-cement  construction  possesses  considerable  fire- 
resistance  and  materially  retards  the  spread  of  flames. 

Old  school  buildings  with  wood  joists  and  studs  can  be  remodeled  so  as  to  be  made 
at  least  partially  fireproof  by  the  use  of  metal  lath  and  cement  plaster  in  ceilings,  parti¬ 
tions  and  walls. 


Trussed  Concrete  Steel  Co.,  Detroit. 


11 


Leading  Architects  and  Contractors  Endorse 
Kahn  System  Construction. 


Malcomson  &  Higginbotham, 

Architects, 

Detroit,  Mich. 

"The  Kahn  System  of  Reinforcement  as  installed  in 
several  of  our  recent  Detroit  Schools  has  proven  very 
satisfactory,  not  only  on  account  of  its  simplicity,  but 
because  also  of  its  evident  economy  and  permanency. 

“Though  seemingly  long  in  coming,  we  believe  that 
the  day  has  now  passed  when  anything  but  fireproof 
construction  will  be  used  in  Detroit  School  buildings.” 


Hewitt  &  Bottomley, 

Architects, 

526  Fifth  Avenue, 

New  York. 

“In  grammar  and  high  school  buildings  at  Southamp¬ 
ton,  Long  Island,  we  found  Floretyle  system  of  floor  con¬ 
struction  economical  and  satisfactory.  On  tests  made 
.August  16th,  1913,  before  the  Board  of  Education,  the 
deflection  for  22  ft.  span,  typical  class  room  floors  was 
only  one-tenth  inch.  For  concrete  work  of  this  kind  .66 
inch  deflection  would  be  allowed  in  good  engineeering 
practice.  We  consider  the  Floretyle  system  as  tested  un¬ 
der  our  supervision  exceedingly  satisfactory.” 


Richards,  McCarty  &  Bulford, 

Architects, 

Columbus,  Ohio. 

“We  have  used  the  Kahn  System  Floretyle  construction 
and  found  it  very  satisfactory.” 


Vernon  Redding, 

Architect, 

Mansfield,  Ohio. 

“1  am  well  pleased  with  Steel  Floretyle  construction  as 
used  in  large  business  blocks  here.” 


W.  H.  Isgrigg  &  Son, 

Architects, 

Pontiac,  Mich. 

“We  have  used  combination  Steel  Floretyle  an  d  Hy- 
Rib  Construction  on  the  Pontiac  High  School,  and  it  has 
been  entirely  satisfactory.” 


Burrowes  &  Wells, 

Architects, 

Detroit,  Mich. 

“We  do  not  hesitate  to  express  our  complete  satis¬ 
faction  in  the  use  of  Kahn  System  products  and  in  their 
business  methods,  having  used  their  various  types  of  tile 
and  solid  concrete  construction.  They  are  a  large,  ex¬ 
perienced  and  thoroughly  reliable  institution,  and  judg¬ 
ing  by  our  success  in  the  use  of  their  materials  and 
methods,  we  feel  that  you  need  have  no  hesitancy  in 
accepting  their  suggestions.” 


Mildner  &  Eisen, 

Architects, 

Detroit,  Mich. 

“We  have  used  Kahn  System  in  many  important 
buildings  and  in  all  cases  they  have  proved  very  satis¬ 
factory  in  every  respect.  We  are  glad  to  recommend 
Trussed  Concrete  Steel  Company’s  materials  and  also 
their  prompt  attention  to  all  contracts.  ” 


F.  O.  Engstrum  Company, 

Contractors, 

Los  Angeles,  Calif. 

“We  are  general  contractors  and  have  used  Steel 
Floretyle  construction  in  three  large  apartment  house 
buildings  of  our  own.  We  find  it  to  be  most  economical 
and  satisfactory  in  every  way.” 


Frank  N.  Cooper, 

Contractor, 

Detroit,  Mich. 

“1  have  used  Steel  Floretyle  Construction  in  the  De¬ 
troit  Home  and  Day  School  with  great  success.  1  am 
immensely  pleased  with  this  type  of  construction  and  the 
excellent  results  obtained,  and  cheerfully  recommend  it.” 


Almion  Engineering  &  Contracting  Co., 
Contractors, 

New  York. 

“We  have  used  Floretyle  construction  in  several  school 
buildings  and  without  doubt  found  it  the  best  product  of 
its  kind  for  floor  construction.  " 


John  Lowry,  Jr., 

Contractor, 

New  York. 

“We  have  used  FJoretyle  construction  extensively  with 
great  satisfaction.  In  every  case  our  test  on  completed 
work  showed  this  system  to  be  more  than  claimed.  Rigid 
care  and  best  workmanship  are  fundamental  with  us  and 
with  these  premises,  there  is  no  better  system.” 


Hurley  Mason  Co., 

Contractors, 

Portland,  Ore. 

“We  have  built  many  buildings,  using  Floretyle  con¬ 
struction,  including  several  hotels,  one  of  which  we  own. 
We  have  had  no  complaints  concerning  the  passage  of 
sounds  through  these  floors.  We  believe  the  hollow  feat¬ 
ures  make  these  floors  more  soundproof  than  the  solid 
slab.” 


12 


Modern  School  Construction. 


Solid  Hy-Rib  Partitions. 

Hy-Rib  is  a  steel  sheathing  stiffened  by  deep  ribs  formed  from  the  same  sheet  of 
steel.  The  large  sheets  of  Hy-Rib  are  attached  at  floor  and  ceiling,  plaster  is  applied  to 
both  sides  and  the  partition  is  complete.  No  studs  or  channels  are  required,  and  the 
expense  of  wiring  lath  to  studs  is  eliminated.  Grounds  for  attaching  base  boards  or 
picture  moulds  are  readily  placed  before  plastering. 


Seven-Rib  Hy-Rib. 

One  of  Three  Types  Furnished. 


Hy-Rib  partitions  are  not  intended 
to  support  loads,  but  are  used  gen¬ 
erally  for  subdividing  the  interior 
into  rooms.  Hy-Rib  provides  the 
best  construction  for  all  non-bearing 
partitions  and  in  fact  for  all  interior 
walls,  where  a  framework  of  girders 
and  columns  support  the  floors. 


The  completed  Hy-Rib  partition, 
being  less  than  2  in.  in  thickness, 
greatly  increases  the  size  of  all  rooms. 
Consider  the  great  saving  in  space  as 
compared  with  6  in.  to  8  in.  required 
for  partitions  of  Terra  Cotta  Tile  or 
wood  studding.  By  using  the  Hy- 
Rib  partitions  throughout,  the  size 
and  cost  of  the  school  building  can 
be  considerably  reduced  owing  to  the 
great  saving  in  space. 

Hy-Rib  partitions  plastered  with 
cement  mortar  are  absolutely  fire¬ 
proof,  as  has  been  demonstrated  by 
tests  of  the  New  York  Building 
Bureau  and  others.  These  partitions 
have  exceptional  strength  and  rigid¬ 
ity.  The  soundproof  qualities  of 
solid  monolithic  Hy-Rib  partitions 
have  been  proven  by  actual  tests  as 
well  as  by  practical  use  in  schools, 
hotels,  apartment  houses,  etc. 

Complete  specifications  and  details 
for  the  construction  of  Hy-Rib  parti¬ 
tions  are  given  in  our  Hy-Rib  Hand 
Book  which  will  be  forwarded  on 


Hy-Rib  Partition,  Trussed  Concrete  Building,  Detroit,  Mich. 
Note  grounds  for  base-board  and  chair-rail. 


request. 


Trussed  Concrete  Steel  Co.,  Detroit. 


Hollow  Walls  or  Partitions. 
Rib  Lath  wired  to  Rib  Studs. 


A.  A.  Post.  Architect. 

Hy-Rib  C  eilings,  Mount  St.  Joseph  Academy,  Buffalo,  N.  Y. 


Hollow  Partitions  of  Rib 
Lath  and  Rib  Studs 


In  some  instances  where  many  pipes 
have  to  be  carried  through  partitions,  it 
is  desirable  to  have  a  hollow  fireprool 
construction.  A  combination  of  Rib 
Studs  with  Rib  Lath  is  ideal  for  this 
purpose.  Rib  Studs,  as  will  be  noted, 
consist  of  two  vertical  steel  members  rig¬ 
idly  connected  by  cross  ties  formed  from 
the  same  section  of  steel.  The  studs  have 
exceptional  stiffness  and  at  the  same  time 
are  open  for  the  passage  of  pipes  or  con¬ 
duits  in  any  direction.  This  design  also 
affords  an  uninterrupted  air  space  be¬ 
tween  the  two  plastered  surfaces,  adding 
to  the  insulating  qualities  of  the  partition. 
Rib  Studs  are  readily  attached  to  floors 
and  ceilings  with  Rib  Stud  extensions. 
Rib  Lath  is  wired  directly  to  the  studs 
and  plaster  applied  to  the  face  of  the  lath 
on  both  sides  of  the  partition.  Other 
types  of  hollow  partitions  can,  of  course, 
be  adopted,  such  as  using  Rib  Lath  with 
other  types  of  studs  of  wood  or  steel. 

Hy-Rib  Ceilings  For 
School  Buildings 

Suspended  ceilings  are  usually  required 
under  roofs  of  schools  and  should  always 
be  fireproof.  For  this  purpose  there  is 
nothing  that  can  compare  with  the  Hy- 
Rib  ceiling.  Hy-Rib,  as  previously  de¬ 
scribed,  comes  in  large  sheets  combining 
lath  and  stiffening  channels.  In  building 
these  suspended  ceilings  all  that  is  nec¬ 
essary  is  to  provide  lines  of  supports 
spaced  4  ft.  to  6  ft.  apart,  the  Hy-Rib 
being  attached  directly  to  them  and  plas¬ 
tered  on  the  under  side  to  form  the  ceil¬ 
ing.  The  great  saving  of  this  simple  con¬ 
struction  as  compared  with  lath  and  chan¬ 
nels  is  apparent  when  one  considers  the 
entire  elimination  of  all  expense  of  wiring 
lath  to  separate  channels. 

For  ceilings  in  semi-fireproof  construc¬ 
tion,  Rib-Lath  may  be  attached  to  the 
underside  of  the  wood  joists  and  plas¬ 
tered  with  cement.  This  produces  good 
fire  resistance,  which  should  materially  re¬ 
tard  the  spread  of  the  flames. 


14 


Modern  School  Construction. 


Sectional  Perspective  of  Counterbalanced 
United  Steel  Sash. 


United  Steel  Casement - Furnished  in  Many  Special  Designs 

and  Especially  Adapted  to  School  Buildings. 


Steel  Sash  for  Windows 
of  Schools 


Authorities  generally  agree  that  the  best  lighting  for 
class  rooms  is  from  one  side  of  the  room  only.  This  means 
that  the  maximum  lighting  value  should  be  secured  from 
the  wall  on  that  side  and  as  little  space  as  possible  devoted 
to  obstructing  members,  such  as  pilasters,  mullions  and 
muntin  bars.  Our  modern  solid  steel  sash  is  ideally  suited 
for  this  condition,  as  practically  no  light  is  obstructed  by 
the  narrow  mullions  and  muntins.  The  full  area  of  the 
window  opening  is  available  for  lighting  as  contrasted  with 
the  old  style  wood  sash,  requiring  wide  frames,  wide  mul¬ 
lions  and  wide  muntins.  These  steel  sash  are  also  fireproof 
and  permanent. 

Even  greater  lighting  value  can  be  obtained  from  the 
exterior  by  combining  these  steel  sash  with  skeleton  frame 
construction  of  reinforced  concrete,  as  previously  described. 
In  this  case  the  pilasters  are  reduced  to  minimum  width  and 
the  steel  windows  extend  continuously  between  them  and 
up  to  the  full  height  of  the  ceiling.  By  the  use  of  these 
modern  methods  of  construction,  the  daylighting  of  class 
rooms  has  been  materially  improved,  increasing  the  comfort 
of  the  children  and  saving  their  eyesight. 


Trussed  Concrete  Steel  Co.,  Detroit. 


I;') 


Economy  Casements  of  United  Steel  Sash. 
A  Type  Well  Adapted  to  School  Buildings. 


United  Steel  Sash  For  Windows 


United  Steel  Sash  is  an  improved  type  of  solid  steel  sash  with  maximum  daylighting  power 
and  strength.  The  deep  narrow  members  offer  practically  no  obstruction  to  the  light.  These 
steel  members  are  united  from  solid  steel  sections  under  powerful  presses  without  cutting  away 
the  metal  at  the  joints,  insuring  the  greatest  possible  strength  and  rigidity.  All  sash  are  neatly 
finished  and  are  very  attractive  in  appearance. 

United  Steel  Sash  is  a  complete  line  to  meet  all  conditions  of  daylighting  and  ventilation. 
Both  pivoted  and  sliding  ventilators  can  be  provided.  Ventilators  may  be  pivoted  just  above 
the  center,  near  the  top  or  the  bottom,  or  also  at  top  and  bottom  to  revolve  on  a  vertical 
axis.  Among  vertical  sliding  sash,  four  types  are  provided,  the  counter-balanced  sash  in  which 
the  upper  sash  is  balanced  against  the  lower;  spring  counterbalances,  lead  counterweights  and 
cast-iron  counterweights.  A  complete  line  of  casement  sash  of  all  types  is  also  included.  All 
sash  are  furnished  in  a  large  variety  of  sizes  and  arrangements. 

Our  engineers  would  be  glad  to  make  suggestions  as  to  the  most  suitable  steel  sash  for 
any  particular  condition.  Our  United  Steel  Sash  Hand  Book  completely  describes  and  illustrates 
all  types  of  sash,  and  is  sent  free  to  those  interested  in  school  building  construction. 


16 


Modern  School  Construction. 


United  Steel  Casements,  Indianapolis,  Ind. 


I’rice  &  McLananan,  Arcnitccts 
Hinged  at  Sides  to  Open  Cut. 


Economy  Casements  of  United  Steel  Sash  Designed 
for  School  Buildings. 


James  Knox  Taylor,  Supervising  Architect. 

United  Steel  Sash  with  Sliding  and  Pivoted 
Ventilators. 

Bureau  of  Printing  and  Engraving,  Wash¬ 
ington,  D.  C. 


Trussed  Concrete  Steel  Co.,  Detroit. 


17 


Waterproof ings,  Dampproofings  and 
Finishes  for  Schools. 

A  dry  building  is  an  essential  requirement  for  the  proper  sanitation  of  schools. 
The  Trus-Con  Laboratories  manufacture  a  complete  line  of  Waterproofings  and  Damp- 
proofings,  which  insure  absolute  insulation  from  moisture  in  concrete  or  masonry  con¬ 
struction.  For  instance,  the  Trus-Con  Waterproofing  Paste  Concentrated  is  mixed  with 
the  water  used  in  the  concrete  when  the  building  is  built  or  in  a  plaster  coat  on  finished 
buildings,  and  thus  insures  an  impervious  concrete  structure. 

Where  the  waterpressure  from  the  soil  is  very  slight,  a  basement  can  be  made 
absolutely  dry  by  applying  Trus-Con  Foundation  Coat  to  the  outside  walls. 

Trus-Con  Plaster  Bond  is  a  dampproofing  product  and  is  applied  to  the  interior 
of  outside  walls.  While  dampproofing  is  its  first  function,  it  serves  an  additional  pur¬ 
pose  of  forming  a  bond  between  the  plaster  and  the  wall,  as  it  has  a  very  tacky  surface 
to  which  plaster  will  tightly  adhere,  and  thus  often  does  away  with  furring  and  lathing. 

Trus-Con  Stonetex  is  a  liquid,  cement,  dampproof  coating  for  stucco,  concrete, 
stone,  brick  or  other  masonry  surfaces.  It  is  so  formulated  as  to  perfectly  bond  with  the 
concrete  or  other  surfaces,  and  does  not  crack  or  peel  off  like  paint.  It  is  furnished  in 
several  colors  and  in  addition  to  dampproofing  the  structure,  adds  to  its  appearance. 

During  the  past  few  years,  there  has  been  much  agitation  throughout  the  country 
over  the  injurious  effect  of  both  lead  and  oil  and  cold  water  paints  for  the  interior  decor¬ 
ating  of  public  buildings.  Lead  and  oil  is  recognized  as  a  poisonous  material  and  water 
paints  scale  and  peel  off,  the  small  particles  floating  through  the  air  and  acting  as  a  germ 
distributor.  Trus-Con  Asepticote  is  a  special  product  formulated  for  the  sanitary  fin¬ 
ishing  of  the  interiors  of  schools,  hospitals,  churches,  as  well  as  private  residences.  It 
dries  with  a  soft  dull  finish,  and  can  easily  be  washed  with  warm  water  and  soap  without 
in  any  way  affecting  its  surface. 

Trus-Con  Floor  Enamel  is  an  ideal,  dustless,  sanitary  washable  finish  for  cement 
floors.  When  applied  with  a  brush  to  the  floors,  it  produces  a  tough,  hard,  elastic  and 
reasonably  durable  finish  and  affords  an  attractive  tile-like  enamel  finish  that  insulates 
and  protects  the  floor  from  the  direct  traffic  which  would  otherwise  cause  continual 
dusting  and  granulation  of  the  surface. 

The  Trus-Con  Laboratories  manufacture  many  other  Waterproofings,  Dampproof¬ 
ings  and  Technical  Paints.  We  will  gladly  furnish  suggestions  as  to  the  best  methods 
for  each  individual  condition,  in  either  new  or  completed  work.  Our  Trus-Con  Hand 
Book  describing  these  products  gives  complete  specifications,  etc.,  and  is  sent  upon  re¬ 
quest. 


18 


Modern  School  Construction. 


A  Few  of  the  Many  Schools  in  Which  Kahn  System  Has  Been  Used. 

The  few  illustrations  shown  in  this  book  give  only  a  meager  idea  of  the  hundreds  of  schools 
in  which  Kahn  Building  Products  have  been  used.  The  following  list  is  only  a  partial  one,  but 
indicates  our  extensive  experience  along  these  lines.  We  are  glad  to  place  this  experience  at  the 
disposal  of  those  interested  in  school  buildings  without  obligating  them  in  any  way.  Our  repre¬ 
sentatives  are  located  in  all  principal  cities  and  will  give  direct,  personal  co-operation  at  all  times. 


Xaiiics  of  schools  printed  in  italics  have  I-'loors  of  Idorctyle  C onstruction. 


ARKANSAS 

Helena — High  School. 

Little  Rock — Deaf  Mute  School. 

“  “  - — Little  Rock  College  Dormitory. 

Marion — School. 

CALIFORNIA 

Cerona — Claremont  Library — Pomona  College 
C’hino — High  School. 

La  Jolla — Bishop  .School  (Partitions). 

Los  Angeles — East  Los  Anyclcs  High  School. 
“  “  — Polytechnic  High  School — 

Addition. 

San  Diego — Bishop  School. 

San  Francisco — Bryant  Cosmopolitan  School. 

COLORADO 

Boulder — Univ.  of  Cojo. — Memorial  Bldg. 
Colorado  Sjirings — High  School  c'k’  ^Mechanical 
i’ldg.  Annex. 

CONNECTICUT 

Bridgeport — .School. 

“  — Xichols  Street  School. 

Hartford — High  School. 

New  London — Harbor  School. 

Stamford — High  School, 
d'orrington — High  School. 

\\'ater])ury — School. 

Watertown — Taft  School. 

Willi  mantic — Nate  hang  School. 

“  — iriitdhani  Street  School. 

DISTRICT  OF  COLUMBIA 

Washington — Georgetown  .School. 

“  — St.  John  Kantius  College. 

“  — -.Vrmy  Barracks. 

“  --War  College. 

“  • — (jonzago  College. 

**  — Howard  Univ.— Science  Hall. 

“  — Holy  C'ross  .\cadeiny. 

GEORGIA 

Macon — Wesleyan  College  ( lymnasium. 

IDAHO 

Genesee — Srh  ool. 

St.  Anthonys-  Idaho  Training  School. 

ILLINOIS 

.\rcola — School. 

.\tlanta — School. 

Champaign —  1 1 igh  .School. 

— Univ.  of  Illinois — .\rmory. 
Danville — High  School. 

1  >ecatnr---Higli  School. 

( Iranville — Marks  School. 

La  Grange — Lyons  High  School, 

1  .ockport — School. 

Monmouth — Wallace  Hall — .Monmouth  College. 

“  — High  School. 

Net)ga — School. 

Peoria — ( ireelcy  .School. 

“  — Douglas  School. 

(Juincy — Jackson  School. 

Robinson — School. 

Rock  Island  Grant  School. 

“  — Manual  Training  School. 

INDIANA 

Attica—School. 

Bedford — High  School. 

Pdoomington — Indiana  Univ.-  -Science  Bldg. 
P>road  Ripple — High  School. 
l?rookville — School. 

Culver — C'ulver  Military  Acatlemy. 

Klkhart—  School. 

I'ort  Wayne — .St.  Lutheran  School. 

“-.Spy  Run  School. 


Indianapolis — School  No.  3  .\ddition. 

“  — Manual  High  School. 

■*  — Riverside  Drive  School. 

Lafayette — Smith  ITall- — Purdue  Univ. 

( )xford — School. 

Rochester  -  -High  School. 

Rolling  Prairie — Interlaken  School. 

Seymour — High  .School. 

.  Terre  Haute — Davis  Park  School. 

IOWA 

Ames- -Chemistry  Bldg. — State  Bd.  of  Rduc. 
Boone — Higli  School. 

Burlington — High  School. 

Cedar  Falls — Iowa  State  Normal  School. 
Council  Blutfs — Iowa  School  for  the  Deaf. 
Davenport — J ohnson  School. 

Des  Moines — Park  Are.  School. 

“  ■ — Highland  Park  College. 

"  “  • — Phillips  School. 

‘‘  **  — Iowa  State  College  Buildings. 

“  *■  — Ilubbell  School. 

‘‘  “  • — Oakland  School. 

Ka.st  Waterloo — Grade  School. 

Kstherville — High  School. 

I't.  Dodge — School. 

“  “  — Butler  Sclioul. 

Sioux  City — Morningside  College  ( lymnasium. 
Spencer — School. 

KANSAS 

.\tchison — W'ashington  .School. 

Newton — High  School. 

Wichita — High  School. 

*■  — Carleton  Sciiool. 

KENTUCKY 

Louisville — St.  Joseph  School. 

"  — \\’est  C'hestnut  School. 

“  — Broadway  School. 

“  — St.  Boniface  School. 

LOUISIANA 

Baton  Rouge — High  School. 

Natchitoches — State  Normal  School — 
Dormitory. 

New  Orleans — Stanley  Thomas  Hall— 

Tulane  University. 

“  — 'fhomas  Hall  Maiaiuette 

Hall — Loyola  College. 

MARYLAND 

-Vnnapoli.s-  U.  .S.  Naval  Hospital. 

— U.  S.  Naval  Academy — Library, 
Gymnasium  and  Academic  Grou]). 
Baltimore — Notre  Dame  Academy. 

— Country  School  for  Boys. 

“  — Johns  Hojikins  Univ.  Bldgs. 

—  Baltimore  C'ity  Schools. 

“  — Mt.  .\gnes  College^ — Laundry. 

Catonsville — .St.  C'harles  College. 

MASSACHUSETTS 

P>oslon — Blackington  .School. 

Millbury — School. 

North  .\dams--.\mherst  College — Natatoriurn. 
Westfield — .dbner  Gibbs  School. 

MICHIGAN 

-\nn  .\rbor — b’niversity  of  .Michigan. 

Hill  memorial. 

“  ’*  -Dental  Bhlg. 

“  “  — Engineering  Bldg. 

— Club  House. 

“  “  — Psychoiiathic  Hos])ital. 

“  “  — I’niversity  Shops. 

Battle  Creek — No.  lo  School. 

“  “  — High  School. 

Bay  City — St.  James  .School. 

Cadillac — School. 


Corunna — School. 

Craton — School. 

Detroit — Detroit  Home  &  Day  Scluud. 

"  — St.  John's  School. 

“  —Grand  River  Ave.  Grade  .School. 

“  -  Russell  School  .\ddition. 

“  — Wm.  Hillger  School. 

— -Marsey  School. 

“  --  Burton  School. 

“  -'Normal  Training  School. 

Kscanaba — Kscanaba  School — Powerlunise. 

L'lint — 3  Grade  .Schools. 

“  — .School  for  the  Deaf. 

Grand  Rapids — Oakdale  Scliool. 

*“  — Ale.vaudcr  St.  School  Add. 

“  “  — East  Leonard  St.  School  Add. 

"  “  — Coldl)rook  School. 

“  ■“  •  -Central  High  School. 

"  “  — Turner  School. 

“  “  — Union  High  School. 

“  — Hall  St.  School. 

“  “  — Sigs'bee  School. 

Greenville — Union  School. 

Holland — High  School. 

Hudson —  School. 

Ironwood — C’entral  School. 

Ishpeming — School. 

Jackson — West  Main  .St.  School. 

Kalamazoo — East  Ave.  School. 

“  — High  School. 

— Western  State  Normal  .School, 
i.ansing — Michigan  Agricultural  College  Bldgs. 
Ludington — High  School. 

Marciuette — High  School. 

— Northern  State  Normal  School. 
-Monroe — High  School. 

-Mt.  Pleasant — Central  State  Normal  .School. 
Negaunee — Manual  Training  .School. 

“  — High  School. 

Pontiac — High  School. 

Port  Huron  —  High  School. 

Royal  ( )ak  School. 


MINNESOTA 

C'hisholm — High  School. 

Fuldn  a — School. 

Rociiester — High  Scliool. 

.St.  Joseph — St.  Joseph  Academp  Col.  Bldg. 
St.  Paul — Ramsey  School. 

— Murray  School. 

“  — .St.  .\galha  Aca<lemy. 

St.  Peter — .School. 


MISSISSIPPI 

I  lattie.sburg~-.\Iiss.  .State  Normal  .School. 
X’icksburg —  1  lioce.san  School. 


MISSOURI 

C  olumbia — Univ'.  of  Mo.  Agricultural  School. 
Gallatin — High  School. 

Kansas  City — Rockhurst  C'ollege. 

Springfield-  -  Boyd  School. 

— Robberson  School. 

-  High  School. 

St.  Louis  .Missouri  School  for  Blind. 

MONTANA 

Billings — High  School. 

Helena — Sisters  School. 

NEBRASKA 

Kearney — Kearney  Military  Academy. 

Lincoln — Lincoln  Business  College. 

' — Lhiiv.  of  Nebr.  Tn<histrial  Plant. 

NEVADA 

Reno — High  .School  (Lath) 

— “Mt.  Rose  .School  (Lath) 

— Orvis  Ring  School  (Lath) 


Trussed  Concrete  Steel  Co.,  Detroit. 


H) 


NEW  JERSEY 

Atlantic  City- — School  (Mass  ^  Atlantic Aves.) 
liloomtield — High  School. 

Ca kl w e  11 — H i(j h  Sc hool. 

Hoboken — High  School. 

jer.sey  City — Technical  High  .School. 

Kingsland — High  School. 

Montclair — School. 

Newark  Lincoln  School. 

\\‘est  Orange — School. 

NEW  MEXICO 

t'lovis — School. 

NEW  YORK 

.\lbany — State  Educational  Lldg. 

Dinghamton — I.aurel  Ave.  School. 

•*  — Union  High  School, 

ilriar  Cliff  Manor — Mrs.  Dow’s  School. 
Brooklyn — \’isitation  School. 

Buffalo — Broadway  School  No.  4L 
••  — St.  Adelbert  School. 

C'aldwcll — High  School. 

Dunkirk — High  School  Addition. 

(ylens  Falls — ITiion  High  School. 

(Ireat  Neck,  L.  I. — IHuh  School. 

Ilornell — School. 

Ithaca — Cornell  Univ.  Training  I  louse. 
Kenmore — School. 

LeRoy — High  School. 

Mt.  X’enion — High  School. 

New  York — Union  Tlieo.  Seminary. 

“  — Stadium,  C'ity  Ckdlege  of  New 

York. 

Peekskill — Drum  Hill  School. 

Rochester — School  No.  3. 

*“  — St.  Andrews  School. 

Rome — Thoiuas  St.  School. 

Southampton,  ]..  1. — School. 

Syracuse — Bellevue  Heights  School. 

“  — .Syracuse  University  Bldgs. 

— Hall  of  C'hemistry. 

--Public  Disiiensary. 

— Carnegie  I.ibrary. 

—  Machinery  Hall. 

—  Hall  of  Natural  History. 

— Stadium. 

— Gymnasium.  *  ^  ^ 

Troy-  Kmma  Williard  Seminary. 
\’alhalla--Jennie  Clarkson  School.*  ,1, 

W’averly — High  School. 

W’est  Point — U.  S.  Military  .\cademy — 2(l 
r>uildings. 

OHIO 

— Memorial  Bldg..  Ohio  Northern 
University. 

.\kron — Robison  Grade  School. 

“  — North  Hill  School. 

— Portage  Path  School. 

“  — South  High  School. 

•*  — Lincoln  School. 

— High  School. 

“  — Bryan  School  .\nnex. 

“  — Frank  H.  ^lason  School. 

— Lane  .\ve.  School  Annex. 

Alliance — High  School. 

.\thens — High  School. 

••  — 'fraining  School—  ()hio  L  niversity. 

Barberton — -High  School, 
liowling  (ireen — State  .\oruHil  School. 

Iluchtel — School. 

Bucyrus — School. 

Canton — St.  Maria  College. 

Carroll — 1 1 igh  School. 

C'ar  roll  ton — School. 

Cleveland — Lincoln  High  School. 

••  , — St.  Michael’s  School. 

“  • — West  High  School. 

— St.  Procops  School. 

Columbus- -Forestry  Bldg.,  Ohio  State  Univ. 

Art  Bldg.,  St.  Mary’s  of  tiie 
Springs  Academy. 

Coshocton — High  School. 

Cuyahoga  I'alls — School. 

Dayton — Trinity  School. 

Delphos — Jefferson  School. 

East  Liverpool — High  School. 

East  Palestine — School. 

Elvria — Clark  St.  School. 

Euclid — Shore  High  School. 

— Euclid  High  School. 

Fremont — School. 


I'ulton— Lincoln  High  Addition. 

Hamilton — Lindenwald  School, 
l.ima — High  School. 

Lorain — Groveland  School. 

McArthur — Sclun)l. 

.Manslield- - 1  ledges  Ave.  School. 

Marion— -/\’a;7  St.  School. 

Martinsville — 1 1  igh  School. 

Marysville — School. 

.Mentor — School. 

Millersburg — School. 

.M  orrow-  School. 

Newark  Grant  St.  School. 

— South  Fifth  St.  School. 

“  — Stevens  St.  School. 

New  Knoxville — High  School. 

New  Iffiiladelphia — High  School. 

Niles — Bentley  .\ve.  School. 

— Warren  ,\ve.  School. 

( )reville — School. 

Oxford — Oxford  Univ.  Bhlg, 

Pi(iua — School. 

Port  Mdlliams — School. 

St.  Bernard — lli^h  School. 

Sandusky — High  Scliool. 

Spriiiglield — High  Scliool. 

■ — Warder  Park  School. 

— High  School  Adtlition. 

\  an  Wert — Higli  School, 

Washington  C'.  H. — High  School. 

Youngstown — Hillman  St.  School. 

—  St.  Patrick’s  School. 

— South  High  School. 

South  Solon — School. 

OKLAHOMA 

.\da — School. 

1  )ewey — 11  igh  School. 

Enid — High  Scliool. 
l.awton — High  vSchool. 

.Muskogee — M'ard  .School. 

— High  Scliool. 

( Iklahoma  City — Putnam  i  ligh  School. 

Pond  Creek — School. 

Wulburtoii — School  of  Mines. 

OREGON 

Kenton — School. 

Portland — Jamesmore  School. 

— Aiuszcorth  School. 

— Mt.  Tabor  School. 

-  Kichuiond  School. 

• — .Sclhvood  School. 

‘‘  — Hoffman  School. 

—  North  Pacific  Dental  College. 

—  Rose  City  Ihark  School. 

— Failing  School. 

— M’ashington  High  School 
( lymnasium. 

— Reed  ! usfit ute—Hall  of  Arts 
and  Science  and  Dormitory, 
Umatilla — School. 

PENNSYLVANIA 

-Mlegheiu — ]2tli  W'ard  School. 

“  — ]■'.  St.  School. 

• — h'ineview  School. 

.\spin  wall — School. 

I  )oylestown--I  ligh  School, 
j  uniatta — School. 

Lancaster — 7th  Ward  School 
“  — .Sth  Ward  School. 

Morganza — Pa.  Reform  School. 

( )vei  brook — 1  )ormitory-Phila.  Theo.  Seminary 
of  St.  Charles  P>oromec 
Philadelphia — Parochial  School — St.  Peter 
and  .S't.  Paul  Cathedral. 

“  — Univ.  Museum  Addition. 

“  — Gratz  College. 

“  — Bayard  Taylor  School. 

—  Library  Division — School  of  P. 
E.  Church. 

—  Primary  School  (5th  &  Nedru). 

-  Brimary  School  (22nd  &  Ritner  ) . 
William  Cullen  Bryant  School. 
Alice  Cary  Reed  .School. 

—  West  Philadeli)hia  High  School. 
— Academy  of  Science. 

—  Thomas  W.  Evans  .\Jnsenm 
and  Dental  Institute. 

-  llenryHoward  Furness  School. 

-  John  Greenleaf  W'hittier  School. 
—  Wm.  V.  Harrity  School. 


Pittsburg — 2  School  I  i  ouses. 

“  — Brookline  School. 

Reading — Douglaj?  Weiser  Sts.  School. 

Williamsport — High  School. 


RHODE  ISLAND 

Central  J'alls — Notre  Dame  School. 
Proviilence — R.  I.  School  of  Design. 


SOUTH  CAROLINA 

IHorence — S.  C.  Industrial  School. 

Greenville-  -Chicora  College. 

SOUTH  DAKOTA 

.St.  J'rancis — School  for  St.  N’incent’s  .Mission 

TENNESSEE 

J ohnsun  ( 'ity — High  School. 

.Memphis—  Evergreen  St.  School. 

“  — I'leece  Station  School. 

“  • — Tennessee  State  Normal. 

“  — Snowden  School. 

“  —High  School. 

“  Lathram  St.  School. 

.Sewaunee  Univ.  of  the  South  Science  Bldg. 

TEXAS 

Athens — High  School. 

Dallas- — Roof  and  Dome  of  Dallas'  Hall — 

S.  M.  Univ. 

I  )enison —  1 1  igh  School. 

Fort  Woi  th — High  School. 

“  -  loth  Ward  School. 

Henderson — School. 

I I  illsboro —  1 1  igh  School. 

1 T ouston — Crockett  School. 

**  — High  School. 

**  — Rusk  School. 

“  — Rice  Institute. 

North  I'ort  W'orth — School. 

.San  Antonio — School  No.  In  .Addition. 

“  “  — Prosi)ect  Hill  High  School. 

San  Marcus — Manual  .Arts  Bldg. 

Segvin — High  School. 

Sherman — H igh  School. 

"  — Science  Hall — Austin  College. 

Texarkana — Rose  Pfill  IVard  .School. 

W'aco — High  School. 

UTAH 

r.ogan — Agricultural  College. 

Price — Carbon  County  High  .School. 

Salt  Lake  City — Technical  High  Scliotd. 

“  “  “  — Hawthorne  School. 

“  “  — ^Jefferson  .'“chool. 

“  “  “  — Ninth  .\ve.  School. 


VIRGINIA 

Danville — Ri)anake  Institute. 

Newport  News’ — John  W.  Daniels  .School. 
Richmond — High  School. 

Rosslyn — Holy  Cross  Academy. 

WASHINGTON 

Cheney — School. 

Everett — }  'ocational  .School. 

Pullman — Washington  State  College  Bldgs. 
Richland — School. 

.Spokane — Bouh  -card  J^ark  School. 

"  — Whittier  School. 

"  — Bryant  School. 

“  — Marcus  U'hitman  School. 

'Tacoma — .SY.  Leo's  School. 


WEST  VIRGINIA 

t'liarleston — ( larnett  School. 
Elmgrovc — Manual  Training  School. 
Fairmont — .Sch  ool. 


WISCONSIN 

Kenosha — 'Third  Ward  School. 

.Milwaukee-  Deaf  and  Dumb  .School. 

"  — Riverside  High  School. 

Boys  High  School — German 
English  Academy. 

Superior — lligh  School. 

W’au watosa  —  I  )ormitory — .\gricultural  School. 


Modern  School  Construction. 


cr;  5  arm:  atm  S  mra  aat 


-r  . .  ' 

H 

- - - — 3 - -  '  "C  T 

1 

i  1, 

Buildings  for  U.  S.  Naval  Academy,  Annapolis,  Md. 
Ten  Kahn  System  Buildings  in  this  Group. 


Ernest  Flagg,  Architect. 


Trussed  Concrete  Steel  Co.,  Detroit. 


21 


Cram,  Goodhue  &  Ferguson,  Architects. 

Cadet  Barracks,  U.  S.  Military  Academy,  West  Point,  N.  Y. 

Twenty  Kahn  System  Buildings  in  this  Group. 


t  i  1  (.(  (  ( 

innn 


War  College,  U.  S.  Army,  Washington,  D.  C. 
Kahn  System  Reinforced  Concrete  Used  Throughout. 


McKim.  Mead  &  Wliite,  Architects. 


22 


Modern  School  Construction. 


Albert  Kalin,  Architect:  l■ir^est  W’ilhy.  Assoc. 

Hill  Memorial  Hall,  University  of  Michigan,  Ann  Arbor,  Mich. 

Built  Kahn  System  Reinforced  Concrete,  including  Hy-Rib  Ceiling  in  Auditorium. 


Donaldson  .Meier,  .\rcliitect-. 

Dental  College,  University  of  Michigan,  Ann  Arbor,  Mich. 

Kahn  System  Reinforced  Concrete  Used  Throughout. 


Trussed  Concrete  Steel  Co.,  Detroit. 


•211 


Andry  .S:  I’endernagel,  Arcliitect'-. 

Stanley  Thomas  Hall,  Tulane  University,  New  Orleans,  La. 

Built  Kahn  System  Reinforced  Concrete. 


J.  X.  liradtord.  Architect. 

Archaeological  and  Historical  Museum,  Ohio  State  University,  Columbus,  O. 

Built  Kahn  System  Reinforced  Concrete.  Windows  of  Uni  ted  Steel  Sash  and  Ceilings  of  Hy-Rib. 


24 


Modern  School  Construction. 


Revels  ft  Jlallenbeck,  Architects. 

Lyman  Hall  of  Natural  History  and  Gymnasium,  Syracuse  University,  Syracuse,  N.  Y. 

Built  Kah  n  System  Reinforced  Concrete  Throughout. 


Trussed  Concrete  Steel  Co.,  Detroit. 


'2o 


Revels  &  Uallenbeck,  Architects. 


Bowne  Hall  of  Chemistry,  Syracuse  University,  Syracuse,  N.  Y. 

Kahn  System  Reinforced  Concrete  Used  in  Many  Buildings  of  this  University. 


Modern  School  Construction. 


2(5 


Jil 


Cram.  (Soodlnie  &  Fergjison,  Architects. 

Administration  Building,  Rice  Institute,  Houston,  Tex. 

Built  Kahn  System  Reinforced  Concrete. 


Debuys,  Clutrchill  &  Latiouisse.  .\rclntects. 

Thomas  Hall  and  Marquette  Hall,  Loyolla  College,  New  Orleans,  La. 

Built  Kahn  System  Reinforced  Concrete. 


James  Knox  Taylor,  Supervising  .\rclntect. 


This 


Bureau  of  Printing  and  Engraving,  Washington,  D.  C. 
monumental  building  is  equipped  throughout  with  United  Steel  Sash  and  is  constructed  of  the  Kahn  Sys 
tern  Reinforced  Concrete.  The  vertical  sliding  ventilators  are  operated  with  lead  counterweights. 


Trussed  Concrete  Steel  Co.,  Detroit. 


27 


Doyle  ^  Patterson.  Architects. 

Reed  institute,  Portland,  Ore.,  showing  Dormitory  Building,  Hall  of  Arts  and  Science,  and  Lounging  Room. 
Kahn  System  Floretyle  Construction  used  throughout,  including  Flat  Ceilings  up  to  3  2  ft.  clear  span. 


28 


Modern  School  Construction 


Stoughton  &  Stoughton,  Architects. 

East  Hall,  Canton  Christian  College,  Canton,  China. 

Built  Kahn  System  Reinforced  Concrete. 


Gonzago  College,  Washington,  D.  C. 

Floors  of  3  7  ft.  Span,  built  Kahn  System  Reinforced  Concrete 


Frank  G.  Pierson,  .\rchiteci. 


Trussed  Concrete  Steel  Co.,  Detroit 


29 


Built 


High  School, 
Kahn  System 


Richmond,  Va. 

Reinforced  Concrete 


C.  K.  ISryant.  Architect. 


Howell  &  Thomas,  .\rcliitects. 


Art  Building,  St.  Marys  of  the  Springs  Academy,  Columbus,  Ohio, 
Built  Kahn  System  Reinforced  Concrete. 


:5() 


Modern  School  Construction. 


Central  High  School,  Grand  Rapids,  Mich. 

Kahn  System  Reinforced  Concrete  Used  Throughout. 


Robinson  &  Campan,  .\rehitects.. 


Union  High  School,  Grand  Rapids,  Mich. 

Kahn  System  Reinforced  Concrete  Used  Throughout. 


Robinson  &  Canipau,  .\rcliitects. 


Trussed  Concrete  Steel  Co.,  Detroit 


HI 


High  School,  Broad  Ripple,  Ind. 

Built  Kahn  System  Reinforced  Concrete. 


TT.  r..  Bass  &  Co..  Architects. 


11 

1— ^ 

IT  .  .  _ 

±  1  |ij, 

21! 
1 1 

mW- 

i.ff 

1  :iS 

r  I  #’  ■  ■ 

■  'MQ|3 

aw  1 

E.  II.  Potter,  Architect. 


Union  High  School,  Glens  Falls,  M.  Y. 

Kahn  System  Reinforced  Hollow  Tile  Construction  Used  Throughout. 


Modern  School  Construction. 


Cannon  &  Fetzer,  Architects. 

Technical  High  School,  Salt  Lake  City,  Utah. 

Kahn  System  Reinforced  Concrete  Used  Throughout. 


R.  K.  .\.  Kletting,  .Architect. 

Jefferson  School,  Salt  Lake  City,  Utah. 

Built  Kahn  System  Reinforced  Concrete. 


A.  Horace  Cook.  .Architect. 

West  Philadelphia  High  School,  Philadelphia,  Pa. 

Kahn  System  Reinforced  Concrete  Used  Throughout. 


Trussed  Concrete  Steel  Co.,  Detroit. 


B.  C.  AIsu])  S;  Co.,  .\i'cliitccts. 

Main  Building,  Tennessee  State  Normal  School,  Memphis,  Tenn. 

Kahn  System  Reinforced  Concrete  Used  Throughout. 


Whitehouse  &  F'ouilhoux.  Architects. 


Failing  School,  Portland,  Ore. 

Kahn  System  Reinforced  Concrete  Used  Throughout. 


Dallas  &  Hedges,  .\rchitects. 

Hawthorne  School,  Salt  Lake  City,  Utah. 

Built  Kahn  System  Reinforced  Concrete. 


Modern  School  Construction 


Riverside  School,  Indianapolis,  Ind. 

Kahn  System  Reinforced  Concrete  Used  Throughout. 


Brubaker  S:  Stern,  .\rcliitects. 


Marcy  School,  Detroit,  Mich. 

Built  Kahn  System  Reinforced  Concrete. 


Malcomsoii  &•  lligginbotliam,  .\rcliitects. 


Trussed  Concrete  Steel  Co.,  Detroit. 


Hillger  School,  Detroit,  Mich. 

Built  Kahn  System  Reinforced  Concrete. 


.\[alcom.son  &  nigginl)Othani,  Arcliitects. 


Burton  School,  Detroit,  Mich. 

Built  Kahn  System  Reinforced  Concrete. 


>[alcomson  &  Iligginliotliam,  .\rcliitects. 


Modern  School  Construction. 


:}6 


Hill  School,  Memphis,  Tenn. 

Kahn  System  Reinforced  Concrete  Used  Throughout. 


Tones  &  I'urbn'n.srer,  Arcliitects. 


O.  Z.  Cervine,  Arcliitect. 

Manual  Training  School,  Rock  Island,  Ill. 

The  large  windows,  assuring  perfect  daylighting  to  interiors,  are  made  possible  by  use  of  United  Steel  Sash. 


Trussed  Concrete  Steel  Co.,  Detroit 


Snowden  School,  Memphis,  Tenn. 

Kahn  System  Reinforced  Concrete  Used  Throughout. 


Jones  &  Fnrbringer,  Architects. 


Fleece  Station  School,  Memphis,  Tenn. 

Kahn  System  Reinforced  Concrete  Used  Throughout. 


Jones  &  Fnrbringer,  Architects. 


is 


Modern  School  Construction 


MTfn 

prill  ^ 

IHlIHrl 

ml 

Marcus  Whitman  School,  Spokane,  Wash. 

Kahn  Syst  em  tloretyle  Construction  Used  Throughout.  See  test  page 


K.  t'.  .Swcatt.  .Vrcliitec't. 


7. 


Rose  City  Park  School,  Portland,  Ore. 
Built  Kah  n  System  Reinforced  Concrete. 


jacolihcrKcr,  Arcliilicl. 


Trussed  Concrete  Steel  Co.,  Detroit 


Thomas  St.  School,  Rome,  N.  Y. 

Kahn  System  Floretyle  Construction  Used  Throughout. 


I'.  W.  Kirkland,  .\rcliitect. 


Coldbrook  School,  Grand  Rapids,  Mich. 

Kahn  System  Reinforced  Concrete  Used  Throughout. 


\\illiam''p|i  \  Cinw.  Arcliilt-rls. 


40 


Modern  School  Construction. 


Rusk  School,  Houston,  Tex. 

Kahn  System  Floretyle  Construction  Used  Throughout. 


O.  J.  Lorelin,  Architect. 


Horace  Cook,  Architect. 

Alice  Carey  Reed  School,  88th  St.  and  Tinicum  Ave.,  Philadelphia,  Pa. 

Built  Kahn  System  Reinforced  Concrete. 


